Gate for railways.



No. 653,925. Patented m l7, I900. A. K. H. BRUGGMANN.

GATE FOB RAILWAYS.

(Application filed Mar. 24, 1899.)

I (No Model.) 9%

- Imvemr /7/va/?,4s /l H- S/PJaGMA/W UNITED STATES PATENT OFFICE.

ANDREAS KLAUS HEINRICH BRIIGGMANN, OF LUBECK, GERMANY.

GATE FOR RAILWAYSQ SPECIFICATION forming part of Letters Patent No. 653,925, dated July 1'7, 1900.

Application filed March 24, 1899. Serial No. 710,386. (No model.)

To all whom it may concern.-

Be it known that I, ANDREAS KLAUS HEIN- RICH BRI'iGGMANN, a citizen of the free city of Lubeck, residingat Lubeck, in the German Empire, have invented certain new and useful Improvements in Gates or Barriers for Railways and other Purposes, (for which I have applied for patents in England, dated February 8, 1899, No. 2,877; in Russia, dated January 28, 1899, No. 6,864; in Austria, dated February 6, 1899; in Hungary, dated February 7, 1899, No. 1,826; in Belgium, dated February 7, 1899, No. 110,310; in Germany, dated September 8, 1898, and in France, dated September 19, 1898, No. 281,473,) of which the following is a specification.

This invention relates to a gate or barrier for railway and other purposes which can be quickly closed or opened and occupies very little space when open.

It consists of the details of structure to be hereinafter described, and particularly point ed out in the claim.

In order that this invention may be the better understood, I now proceed to describe the same, reference being had to the accompanying drawings and to the letters marked thereon.

Figure 1 is a part sectional and part plan side elevation of my gate. Fig. 2 is a plan of one gate or barrier when in the locked position. Fig. 3 issa side view of the same when open.

An axle b rests in a support Ct. Articulated levers c are connected to the axle b by means of levers d, pivoting on the axle b. The levers d, conveniently bent at one end, are pivoted to levers e, which are pivoted to disks f, situated on an axle g. The latter is pivoted in the support a and can be rotated by a lever h, attached to it. The opposite ends of the system of levers are pivoted to a guidingpiece i, which moves on the ground by means of a roller 76 and consists of two flat side plates each having a slot Z, in which is guided the central pivots of the levers c. If the way to be closed is very wide, a pair of gates is used,

as shown in Fig. 1 of the drawings. In this case a chain or similar wheel m is provided on the axle gin order to transmit the motion imparted to one half of the barrier to the other half by means of a rope or other device.

The operation of the barrier is as follows: When the gate is closed and is to be opened, the lever h is turned in the direction of the arrow to the extent of a quarter-revolution. In this mannerthe axle g and the disksf are rotated and the levers e (1 brought into action almost instantaneously on account of the advantageous knee-lever arrangement. The axle g may carry another disk, which is connected with a signaling device.

The favorable operation of the arrangement is assisted by the guiding-pieces 2', which prevent the system from bending sidewise.

To limit the movement, the pivots of the levers may be connected by chains, and in order to prevent the unauthorized operation of the barrier through the lever h the latter may be locked in position by asuitable device.

By this invention the operation of such gates and barriers is almost instantaneous. In consequence the liability to accidents is greatly reduced. Further, the avoidance of heavy counterweights, which require winding up, reduces the amount of force required, and this also facilitates operation and increases safety.

What I claim, and desire to secure by Letters Patent of the United States, is

The combination with the lazy-tongs having lateral extensions from their central pivots, means at one end of the tongs for spreading the tongs, and a guiding-plate secured to the outer end of the tongs, said plate having a horizontal slot adapted to receive said lateral projections, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two witnesses.

ANDREAS KLAUS HEINRICH BRllGGilIANN.

Witnesses:

HERM. HEINR. W ILH. OLOFF, GUSTAV LORENZEN. 

